[onona]

At best, the success outcome of a vaccine is coin flip

Hard no on that statement Mr. Tyler.

Maybe you're thinking of the flu vaccine, but for other diseases, vaccines kick ass.

[Morpheus2009]

Actually, the smallpox vaccine would make snowflakes melt down in terror because you could still get smallpox and die with full vaccination, but it was better for the needs of the many since it was less likely.

[Steven Tyler]

Corona is a type of flu.

19 to 60 % efficy
https://www.cdc.gov/flu/vaccines-work/effectiveness-studies.htm

[43north]

“Maybe you’re thinking of the flu vaccine, but for other diseases, vaccines kick ass.”

Please list the vaccines that “kick ass” (more than 90% effective) against viruses.